Folding box



July 17, 1923. 1,462,297

J. R. MYERS FOLDING BOX Filed Aug. 16, 1920 2 Sheets-Sheet 3 //7 4.. I rg w .L. 'i

Patented duly 1'7, i923.

UNETED SAWS JOSEPH R. MYERS, OF CHICAGO, ILLINOIS.

FOLDING BOX.

Application filed August 16, 1920. Serial No. 403,720.

To all whom it may concern:

Be it known that I, Josnrn R. MYERS, a citizen of the United States, anda resident of the city of Chicago, county of Cook, and State ofIllinois, have invented certain new and useful Improvements in FoldingBoxes, of which the following is a specification.

My invention relates to improvements to folding paper boxes and has forits object the provision of an improved construction of this charactercapable of being folded flat for convenient transportation and capableof being readily distended into box form automatically locking itself indistended form.

Other objects will appear hereinafter.

The invention consists in the combinations and arrangements of partshereinafter described and claimed.

The invention will be best understood by reference to the accompanyingdrawings forming a part of this specification, and in which,

Fig. 1, is a top plan view with portions broken away and others shown inhorizontal section of a paper box embodying the invention and shownfolded flat.

Fig. 2, is a top plan view of one end of a slightly modified form ofbox.

Fig. 3, a bottom plan view corresponding with Fig. 2.

Fig. 4. 'a top plan view of another modified form of box. I

Fig. 5, a bottom plan view corresponding with Fig. 4.

Fig. 6, a top plan view of another modified form of box.

Fig. 7, a bottom plan view corresponding with Fig. 6.

Fig. 8, a bottom plan view of another modified form of box.

Fig. 9, a prospective view of one end of the form of box illustrated inFig. 1 and shown distended, and

Fig. 10, a view of a section taken on line 10-10 of Fig. 1.

The form of construction illustrated in Fig. 1 comprises a folding paperbox made of chip lined boxboard and comprisinga bottom 11 and side walls12 joined thereto by the usual creases. The bottom 11 is also providedwith end walls 13'joined thereto by the usual creases and corner flaps14 are provided at the end of the-side walls 12 and joined thereto bythe usual creases, being free from the end walls 13. Each of the or thelocking flaps.

corner flaps 141s provided with a diagonal cut 15 defining a diagonalbending line therein. ,This cut 15 is formed in and confined to the chipside of the lined boxboard and whereby the corner flaps will be causedto bend very easily along the lines 15. Each of the end walls 13 isprovided with an inwardly turned locking flap 16 overlying thecorresponding fiaps 14: as shown. Each end wall 13 is provided with asecuring portion 17 formed integrally therewith but defined therefrom bya slit or crease 18 so as to form a line of weakened union between eachsecuring portion 17 and the corresponding wall 13. Each locking flap 16is secured to the corresponding securing por-' tion 17 by wire stitches19.

By this arrangement when'tliebox is distended by raising the side walls12 and the end walls 13, the corner flaps 14 will automatically bendalong the lines 15 and the sides thereof adjacent the side walls 12 willautomatically pass under the corresponding ends of the locking flaps 16,thus automatically locking the box in distended form. as indicated inFig. 9, the securing portions 17 yielding along the lines of weakenedunion 18 to permit of such automatic engagement without breaking thecorner flaps It will be observed, particularly in Fig. 10 of thedrawings that the slits 15 are cuts in the chip side of the box boardwhich leave the remaining portion or facing or cover thereofunpenetrated. This construction forms a bending line which will bendvery easily and at the same time the strength of the material isimpaired but littleif any. By this arrangement the strain imparted tothe securing portion 17 in opening is very little and the automaticoperation of the box thereby greatly facilitated.- It will also beobserved that in order for the automatic action of the box to takeplace, it is necessary that the locking flap 16 yield sufiiciently topermit folding of the corner flaps thereunder. The weakened unionbetween the securing portion 17 and the corresponding end wall permitsthe necessary yielding of the locking flap 16 without undue bending orstraining thereof. Thus, all that is necessary in order to distend thebox is to raise the side walls 12 whereupon the box will automaticallyioc'k itself in distended form.

For convenience in description I have referred to the walls 12 and 13 asthe side and I tion, illustrated in Fi end walls of the box but it is.to be noted that these are only terms of convenience, it being properto call either set of walls the side or end walls of the box.

In the form of construction illustrated in Figs. 2 and 3, the lockingflaps 16 and the ,securin ortions 17 are rovided-with re istering medialcreases or slits 20 which tend to increase the flexibility of the partsand thus facilitate the automatic action of the box.

slightly different "form, being defined by slit-s or creases 22 asshown.

In the form of construction illustrated in Figs. 6 and 7 the securingportions are dc fined by lines of perforations or pin holes 23 whichconstitute the lines of weakened union with the end walls. i a

In the form of construction illustrated in Fig.8 the'securin portions 17are defined by straight lines 0 perforations or pin holes 24 asindicated. I v i The various modified forms of construc- 2 to 8inclusive, are identical with that il ustrated in Fig. 1 except for thediflerences indicated and their operation is the same.

. While I have illustrated and described the referred forms ofconstruction for carrym m invention into effect, these are capa,

' Patent is ble 0 variation and modification without departing from thespirit of the invention. 'I, therefore, do not wish to be limitedIto-the precise details of construction set forth, but desire to availmyself of such variations and 'modifications as come under the scope'ofthe various claims.

I Having described my invention, what I claim as new and desire tosecure by Letters and end walls, the side walls being provided withcorner flaps resting against the end walls, and the end wall membersbeing provided with locking flap members overlying said corner flaps andadapted and arranged to co-operate therewith to lock said boxautomatically in distended form upon opening thereof, one ofsaid membersbeing provided with securing portions joined thereto by lines ofweakened but unsever'ed union and the other of said members beingattached to said securing portions, substantially as described.

2. A folding box made from a single blank. of chip lined boxboard andcomprising bottom, side and end walls, the side walls being providedwith corner flaps restin against the end walls, said corner flaps beingdiagonally weakened by slits in and confined to the chip side of saidboxboard, and the end Wall members being provided with locking flapmembers overlymg said corner flaps and adapted and arranged toco-operatetherewith to lock said box automatically in distended form upon openingthereof, one of said members being provided with a securing portionjoined thereto by lines of weakened but unsevered union and the'other ofsaid members being attached vto said securing portion, substantially asdescribed.

3..A folding box made from a singleblank of chip lined boxboard andcomprising bottom, side and end walls foldable into flat or distendedpositions, lines for bending being defined by slits in and confined toth chip side of said boxboard.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOSEPH R. MYERS.

Witnesses :v

Josmm R, H. Poms, I Rosa K. TRIB.

